GASCO X04NI97CA580003 CO 200 PPM | CO2 2.5% | H2S 20 PPM | Balance Nitrogen contained in a 58 Liter Aluminum ecosmart Factory refillable Cylinder, Cylinder connection C-10 5/8"-18 UNF, Calibration Certificate NIST, Made in the USA
Hydrogen Sulfide 20 PPM/Carbon Monoxide 200 PPM/Carbon Dioxide 2.5%/Nitrogen balance